Hi there!
I was really excited to see this, but unfortunately it looks like this might be a bad dump. If you open up some of the .u packages under System in a hex editor, after extracting the ISO (I used extract-xiso), you'll notice that there is an overlap of some data into other files.
For example, with the .u packages, you'll probably notice INI data at the start of the file which shouldn't be there.
Another example are the .utx packages - these should start with the signature 'C1832A9E7E', but instead, again, many of them appear to have data from other files at the start.
Right now this is preventing it from running at all.
Hopefully you're able to rectify this and upload a corrected copy?
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2023-09-15: we managed to recover the data and extract it successfully here.
https://drive.google.com/file/d/1H6it3vvYb3SAD5kQnuw-hXSnkhmwwYj6/view?usp=drive_link
This will load up with Cxbx-Reloaded. Given that, I've updated my rating.